Fan



FIG. 1 is a perspective view of a fan showing my new design;

FIG. 2 is a side elevation of one side thereof;

FIG. 3 is a side elevation of the other side thereof;

FIG. 4 is a top view;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front elevation thereof; and,

FIG. 7 is a rear elevation thereof. 

The ornamental design for a fan, as shown and described. 